About: http://webisa.webdatacommons.org/421849698

Property	Value
http://www.w3.org/1999/02/22-rdf-syntax-ns#type	http://www.w3.org/ns/prov#Entity
http://www.w3.org/ns/prov#value	Once I saw in a book this expression: like water off a duck's back with the article the, i.e. like water off the duck's back.Is the later expression also grammatical?If yes, would you explain the difference, please?thanks
http://www.w3.org/ns/prov#wasQuotedFrom	english-test.net